现有的矿井通风教科书中关于采掘工作面的风量计算存在二个问题:一是很少讨论需要的通风时间问题;另一是计算风量的公式中存在供风量与产量的一次方成正比的关系。本文导出采掘工作面稀释有害气体和烟尘的计算公式,说明供风量与通风时间和有害气体浓度之间的关系,并附有计算例题。建议在高沼气(成二氧化碳)矿井的采掘工作面的风量计算以沼气或二氧化碳的涌出量为计算依据,在低沼气或二氧化碳矿井以最优气侯条件为风量的计算依据。 There are two problems with existing mine ventilation textbooks on the calculation of air volume in mining face: one is the discussion on the ventilation time required; and the other is that there is a direct relation between the air volume and the first-order power of output . This paper derives the calculation formula for dilution of harmful gases and soot on the mining face, and shows the relationship between the supply air quantity and the ventilation time and the concentration of harmful gas, with calculation examples. It is suggested that the calculation of air volume at the mining face of a high-biogas (carbon dioxide) mine is based on the calculation of the amount of biogas or carbon dioxide ejected and the calculation of the air volume in the low-biogas or carbon dioxide mine at the optimal weather conditions.